We took a DNA test for fun at Sunday dinner, and within minutes my father was screaming at me to get out of the house. I thought the results had exposed some ordinary family secret. I had no idea they had just blown open something my family had been hiding for decades. I was kicked out of my parents’ house because of a DNA test. It happened in less than two minutes. My younger sister, Ava, brought home one of those ancestry kits like it was a board game. “We’re doing it,” she said at Sunday dinner, shaking the box....
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